Design and Simulation of a Routing Algorithm based on Quality of Service in Mobile Ad Hoc Network

Due to limitations of mobile Ad Hoc networks، adding service quality to routing protocols of these networks improves their effectiveness and results in attaining requirements of passive defence. The main characteristics of mobile Ad Hoc networks are continuous changes in network structure as well as independency of nodes to any central unit. In this paper، using bandwidth calculation rules of multi-cast protocols a new routing method (named QB-ODMRP) is suggested based on a basic protocol (ODMRP) in order to avoid increasing delivery time (decreasing network speed) while increasing speed of individual nodes. Simulations on 60 dynamic and static nodes using ‘Glomusium v 2. 03’ software in various service quality scenarios show that the suggested method can improve delivery rate as much as %25 and decrease end-to-end delay %30، resulting in improving service quality.